Color

#545a9c

#545a9c
hex#545a9c
rgbrgb(84, 90, 156)
hslhsl(235, 30%, 47%)
oklchoklch(0.494 0.105 277.9)
Closest name: Bellflower (#5d66aa)Relative luminance 0.116

Colors that go with #545a9c

Charcoal, Amber and Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#9c9654

#547e9c · #72549c

#9c545a · #5a9c54

Split-complementary

Open in tool →

#9c7254 · #7e9c54

#9c547e · #9c9654 · #549c72

Contrast

#545a9c as textRatioAAAA largeAAAFix
Aaon white
6.33:1passpassfail
  • AAA: use #4d528f as the text (7.19:1)
Aaon black
3.32:1failpassfail
  • AA: use #6a70af as the text (4.55:1)
  • AAA: use #8e93c2 as the text (7.1:1)
  • AA: or shift the background to #dbdbdb (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #545a9c as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #545a9c
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #545a9c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/545a9c-9e9cc4-df8d4e-241f2d-e9eef1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md